US20070200349A1 - Wind wheel and electricity generator using same - Google Patents

Wind wheel and electricity generator using same Download PDF

Info

Publication number
US20070200349A1
US20070200349A1 US11/788,901 US78890107A US2007200349A1 US 20070200349 A1 US20070200349 A1 US 20070200349A1 US 78890107 A US78890107 A US 78890107A US 2007200349 A1 US2007200349 A1 US 2007200349A1
Authority
US
United States
Prior art keywords
ring
wind
defined
driven generator
load ring
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
US11/788,901
Other versions
US7358624B2 (en
Inventor
C. Bacon
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Bacon Group LLC
Original Assignee
Bacon C R
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority to US11/190,026 priority Critical patent/US7215038B2/en
Application filed by Bacon C R filed Critical Bacon C R
Priority to US11/788,901 priority patent/US7358624B2/en
Publication of US20070200349A1 publication Critical patent/US20070200349A1/en
Assigned to BACON GROUP LLC reassignment BACON GROUP LLC ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: BACON, C. RICHARD
Application granted granted Critical
Publication of US7358624B2 publication Critical patent/US7358624B2/en
Application status is Expired - Fee Related legal-status Critical
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03DWIND MOTORS
    • F03D9/00Adaptations of wind motors for special use; Combinations of wind motors with apparatus driven thereby; Wind motors specially adapted for installation in particular locations
    • F03D9/20Wind motors characterised by the driven apparatus
    • F03D9/25Wind motors characterised by the driven apparatus the apparatus being an electrical generator
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03DWIND MOTORS
    • F03D1/00Wind motors with rotation axis substantially parallel to the air flow entering the rotor 
    • F03D1/06Rotors
    • F03D1/065Rotors characterised by their construction, i.e. structural design details
    • F03D1/0666Rotors characterised by their construction, i.e. structural design details of the whole rotor
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03DWIND MOTORS
    • F03D15/00Transmission of mechanical power
    • F03D15/20Gearless transmission, i.e. direct-drive
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03DWIND MOTORS
    • F03D80/00Details, components or accessories not provided for in groups F03D1/00 - F03D17/00
    • F03D80/70Bearing or lubricating arrangements
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K7/00Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/18Structural association of electric generators with mechanical driving motors, e.g. turbine
    • H02K7/1869Linear generators; sectional generators
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K2201/00Specific aspects not provided for in the other groups of this subclass relating to the magnetic circuits
    • H02K2201/15Sectional machines
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K41/00Propulsion systems in which a rigid body is moved along a path due to dynamo-electric interaction between the body and a magnetic field travelling along the path
    • H02K41/02Linear motors; Sectional motors
    • H02K41/03Synchronous motors; Motors moving step by step; Reluctance motors
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/70Wind energy
    • Y02E10/72Wind turbines with rotation axis in wind direction
    • Y02E10/721Blades or rotors
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/70Wind energy
    • Y02E10/72Wind turbines with rotation axis in wind direction
    • Y02E10/725Generator or configuration

Abstract

A wind-driven power source comprises a propeller-driven rotor structure and a stator structure carrying clusters of copper-wire wound ferromagnetic cores as voltage generators. The cores are arranged in pairs spaced apart by hard rubber rollers which engage the inside surface of a load ring forming part of the rotor structure. The overall rotor structure comprises the large diameter load ring, a smaller diameter root ring and a plurality of aerodynamic blades extending radially outwardly from the root ring and secured either by saddle blocks or integral bonding to the load ring. The load ring may be aluminum or plastic. Permanent magnets are arranged around the load ring to interact with the voltage generator structures to produce three-phase electricity.

Description

    RELATED APPLICATION
  • This application is a continuation of U.S. application Ser. No. 10/995,729 filed under attorney docket no. RHB-100-A on Jul. 26, 2005, currently pending. The content of the U.S. patent Ser. No. 11/190,026 is incorporated herein by reference.
  • FIELD OF THE INVENTION
  • This patent relates to wind wheels and to wind-driven electricity generators using wind wheels. More particularly, the disclosure herein describes a wind-driven generator of minimal complexity, lightweight and optimized efficiency which can be constructed of low cost components.
  • BACKGROUND
  • It is known to use wind wheels to perform mechanical functions and to generate electricity. An early wind wheel electrical generator is disclosed in U.S. Pat. No. 1,233,232, issued Jul. 10, 1917, to A. H. Heyroth. The Heyroth wind wheel comprises a large diameter rotor ring carrying permanent magnets and a center axle which supports the rotor ring by means of radial spokes. Rotation of the rotor ring causes the permanent magnets mounted thereon to move past stationary magnetic cores and the changes of flux value through the cores result in the generation of electrical voltages in windings carried by the cores.
  • A similar but more recent device is shown in U.S. Pat. No. 6,064,123, issued May 16, 2000, to Nils Gislason.
  • Still another device is shown in U.S. Pat. No. 6,664,655 issued Dec. 16, 2003, to Charles S. Vann. The Vann wheel comprises a large number of short radial blades fixed between two large-diameter, concentric metal rings. The outer ring is supported for rotation on three outside rollers and the ring can be magnetized so as to form part of a voltage generator or a motor.
  • SUMMARY
  • This disclosure describes a wind wheel particularly, but not exclusively, suited for use in an electricity generator. To the extent so used, the generator involves optimal application of the following principles:
      • 1. Higher rotor speeds generally result in higher generator output power.
      • 2. Higher rotor speeds are more easily achieved with a lighter, lower-mass rotor structure; and
      • 3. It is advantageous to minimize torque and moments drag forces on the rotor structure.
  • The wind wheel of the present invention affords optimal use of these principles in a rotor structure comprising shell diameter root ring, a larger diameter outer ring, and a plurality of lightweight blades structurally connected at their inner ends to the root ring and at a midpoint to the outer ring. The outer ring is used in a rotary support system typically using rollers to allow the rotor to rotate about an axis which is common to the root and outer rings.
  • When used in an electricity generator, the lightweight rotor can carry a plurality of spaced permanent magnets to co-act with one or more stationary core arrangements to produce electricity as the rotor rotates.
  • The present arrangement requires no center axle and has the potential to produce high rotor speed for any given wind force or speed without the need for a gear box. The use of a midpoint structural ring providing support at the midpoints of the blade allows for the use of lightweight materials such as foam core composition for blade construction.
  • These and other advantages of the invention will be best understood from a reading of the following specification which describes the preferred embodiment of the invention.
  • BRIEF DESCRIPTION OF THE DRAWINGS
  • The description herein makes reference to the accompanying drawings wherein like reference numerals refer to like parts throughout the several views, and wherein:
  • FIG. 1 is a perspective view of a portion of a “wind farm” employing three generators constructed in accordance with the present invention and mounted on poles;
  • FIG. 2 is a detail of one of the generators of FIG. 1;
  • FIG. 3 is a cross-section of one of the propeller blades of the structure of FIG. 2;
  • FIG. 4 is a detail of the structure of FIG. 2 showing the arrangement of voltage generator core structures straddling an inside roller as part of the stator structure for the device of FIG. 2;
  • FIG. 5 is a detail of the structure of FIG. 2 showing the core structures, permanent magnets and propeller blade mounting structure in three-dimensional detail;
  • FIG. 6 is a side view of the structure of FIG. 5 showing part of the rotor in cross-section;
  • FIG. 7 is a cross-section of a blade showing additional rotor structure;
  • FIG. 8 is a representative circuit diagram generating three-phased power from the structure of FIGS. 1-7;
  • FIG. 9 is a plan view of an alternative embodiment of a rotor structure; and
  • FIG. 10 is a partial cross-section of the structure of FIG. 9 in greater detail showing the support rollers for the rotor of FIG. 9 and the relationship between the permanent magnets and the voltage-generating structures mounted on the stator.
  • DETAILED DESCRIPTION
  • Referring first to FIG. 1, there is as shown a portion of a “wind farm,” including identical wind-driven power sources 10, 11 and 12 mounted on poles 14, 15 and 16 to collect wind and produce electricity from the energy contained therein. Since all of the sources 10, 11 and 12 are identical, only source 10 will be described in detail.
  • Referring now to FIGS. 2-7, source 10 comprises a stator structure 18 made up of three triangularly arranged aluminum struts 19 mounted on the pole 14. The stator structure 18 includes three generating units 20 and 21 mounted on plates 50 and 22 described in greater detail with reference to FIGS. 4 and 5. Again, the units 20, 21 and 22, although in different locations on the power source 10, are identical and unit 20 is described as representative.
  • Unit 20 comprises two ferromagnetic iron cores 26 and 28 closely arranged around opposite sides of and straddling a roller 30 which is one of three stator-mounted rollers symmetrically arranged on the plate 50 of the stator structure 18. The rollers 30 support a rotor structure 32, the largest component of which is an aluminum ring 34. This is variously referred to herein as the “outer ring” or the “load ring” and, in this embodiment, includes a number of components, including a ferrous metal backer ring 48 and an array of permanent magnets 36 bonded to the radially inner surface of the broken ring, to generate electricity. The aluminum ring 34 makes the structure light and easy to accelerate while the iron backer ring 48 provides a flux path for the magnetic system. The rotor structure 32 further includes lightweight composite aerodynamic blades 38, 40 and 42 which, as best shown in FIGS. 2 and 3, are preferably made by overlaying a rigid foam plastic core 44 with a synthetic resin exterior covering 46.
  • The rotor structure 32 further comprises a non-ferrous root ring 45 to which the blades 38, 40 and 42 are attached at their inner ends. The root ring 45 may be of a composite, plastic construction or of other relative lightweight material. By way of example, the blades 38, 40 and 42 may be approximately five feet in length. The root ring 45 may be approximately two feet in diameter and the aluminum load ring 34 may be approximately six feet in diameter. As such, the load ring 34 is attached near the radial midpoint of the rotor structure 32 to add strength and rigidity to the blades to resist torque deflection. The blades are cambered with the pitch of approximately forty-two degrees at the inner or root end thereof and approximately one-half of one degree at the outside tips. The pitch changes gradually from end to end.
  • Referring to FIGS. 2 through 5, the stator and rotor structures will be described in greater detail. The stator structure 18 comprises aluminum plates 50 at the apices of the triangular support struts shown in FIG. 6. Each plate 50 holds a pair of spaced apart, laminated, iron cores 26 and 28 wound with copper coils 29 and 31. Between each set of two core structures 26 and 28 is rotatably mounted a hard rubber roller 30 which engages the outer surfaces of a polycarbonate track 52 running over the outside surfaces of the permanent magnets 36 which are bonded to a steel backer ring 48 mounted on the aluminum load ring 34 to provide a continuous magnetic flux path. Non-magnetic spacers 33 are disposed between the permanent magnets 36. The polycarbonate track 52 is a thin film bonded over the flat surface defined by the combination of the magnets 36 and the spacers 33, as best shown in FIGS. 5 and 6.
  • The rollers 30 make contact with and ride on the flat surface provided by the polycarbonate track 52 for smooth vibration-free rotation of the load ring 34 of the rotor structure 32. The ferromagnetic cores 26 and 28 are located in close proximity to but spaced from the polycarbonate ring by approximately 0.180 inch. In a practical embodiment of the size described above, it has been found that the magnetic force of attraction between the permanent magnets and the ferromagnetic core structures 26 and 28 is approximately 40 pounds per voltage generation unit for a total of 80 pounds of attraction at each of the three stator structures 18 as the magnetic rotor rotates past. In order that the aluminum load ring 34 be able to withstand these attractive forces without deflection, the rotor rollers 30 are preferably mounted symmetrically between the closely matched pairs of cores 26 and 28 for maximum resistance to deflection so that they contact the inside surface of the load ring directly between the core structures. Additional rollers 37 are rotatably mounted behind the stator structure as shown in FIG. 6 to provide thrust support; i.e., support in the direction parallel to the axis of rotation.
  • The blade support structure is best shown in FIGS. 5, 6 and 7 to comprise saddle blocks 54 which receive and conform to the inside surfaces of each of the blades 38, 40 and 42. Clamp blocks 56 and 58 attach by way of cap screws to the saddle blocks to trap the blades 38, 40 and 42 and hold them firmly to the load ring 34 for overall rigidity.
  • Stops 58 are preferably attached by cap screws to plates 60 on the stators 18 to prevent the rotor 32 from moving forwardly of the stator structure. The spacing between the stops 59 and the outer surface of the load ring 34 may be on the order of ¼ inch; minimal reverse thrust loading is experienced and thus no outside rollers are required.
  • By way of summary, each of the generator units comprises a stator structure 18 consisting of a triangular frame made of struts 19 and three symmetrically arranged pairs of generating units 20, 21 and 22. Each generating unit includes a pair of ferromagnetic cores 26 and 28 and wound coils straddling a roller 30 adapted to ride on the radially inner track 52 of the load ring 34. The load ring 34 is integrally attached to each of the lightweight propeller blades 38, 40 and 42 at approximately the midpoints thereof to add structural stiffness. The inside surface of the load ring 34 is provided with an array of permanent magnets 36 which move in radially spaced relationship to the stator cores 26 and 28 to generate voltages in the cells as the propeller blades 38, 40 and 42 drive the rotor ring in a circular path.
  • Referring now to FIG. 8, a representative electrical system based on the use of 160 permanent magnets on the inside of the six foot load ring 34 is shown. The system comprises clusters 64, 66 and 68 of six coils each spaced to create a three-phase electrical system. The two matching-phase coils in each cluster are wired in series. There are six identical clusters. Each cluster has its respective matching phased coil pairs wired in parallel to form an output circuit. Each of these output circuits has a capacitor bank 70, 72 and 74 connected between the leads to correct the power factor. Each circuit is then fed to one of the full-wave rectifiers 76, 78 and 80, respectively, to provide unregulated DC voltage to an output circuit comprising resistors 84, 86 and 88. The circuit of FIG. 8 shows voltage meters in strategic locations to monitor output. Each coil is in a representative example consisting of 100 turns and the air gap between the cores of the generator structures and the magnets are approximately five millimeters.
  • In a successfully operated embodiment, the weight of the blades are approximately 36 pounds total and safely rotated at a speed of up to 250 revolutions per minute. The total weight of the magnets is approximately 15 pounds and the rollers 30 are 4 inches in diameter and made of hard rubber.
  • Referring now to FIGS. 9 and 10, an alternative rotor structure 100 will be described. The rotor structure comprises a load ring 102 made of molded lightweight plastic and having an aerodynamic or wedge-shaped cross-section as shown in FIG. 10. The plastic load ring 102 is physically integrated with the blades 104, 106 and 108 at approximate midpoints thereof as shown in FIG. 9. The inner ends of the blades are bonded by standard fiberglassing techniques to the smaller diameter root ring 110. The term “fiberglassing” is intended to encompass composite structures of various kinds including those using fibers of graphite, glass and other materials.
  • Whereas the permanent magnets 36 of the embodiment of FIG. 4 are mounted on the radially inside surface of the load ring 34, the permanent magnets 114 of the embodiment of FIGS. 9 and 10 are arrayed annularly around the leeward or downwind surface 130 of the load ring 102 and are bonded to an annular ferromagnetic backer ring 112 which is cast into the load ring 102 as shown in FIG. 10. A plastic surface can be placed atop the magnets for weather proofing. Rollers 124 bear against the inside surface 126 of the load ring 102 and are arranged in the symmetrical and equally-spaced arrangement shown in FIG. 9. Those rollers are carried by the stator structure 116 which, like the first embodiment, is made up of a triangular arrangement of beams. Ferromagnetic core structures 118 with wound coils 120 are also placed on the stator structure 116 closely adjacent to the track of the permanent magnets 114 as the rotor rotates. Thrust support is provided by means of rollers 128 which bear against the surface 130 radially inboard of the track of the permanent magnets 114.
  • In this embodiment, the generating units are essentially out of the airstream, i.e., in the shadow of the load ring 102 to reduce losses due to windage. Only the radial rollers 124 and smaller portions of the stator structure lie in the windstream. This structure may be made extremely light in weight and extremely rigid because of the possibility for integrating with epoxy-bonding, fiberglassing techniques and the like. The electrical arrangement of FIG. 8 may also be used in combination with the structures of FIGS. 9 and 10.
  • While the invention has been described in connection with what is presently considered to be the most practical and preferred embodiment, it is to be understood that the invention is not to be limited to the disclosed embodiments but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims, which scope is to be accorded the broadest interpretation so as to encompass all such modifications and equivalent structures as is permitted under the law.

Claims (28)

1. A wind-driven generator comprising:
a stator structure;
a rotor structure including:
a root ring having an axis of symmetry;
a lightweight, non-magnetic load ring concentric with said root ring;
a plurality of aerodynamic blades pitched to be rotated by wind moving parallel to said axis of symmetry, each of said blades being secured at its inner end to said root ring and at or near a midpoint to said load ring;
a ferrous metal backer ring mounted to the load ring;
a plurality of permanent magnets attached to the backer ring;
a plurality of rollers mounted on said stator structure and positioned to run on the load ring; and
a plurality of electric generator structures mounted to said stator structure closely adjacent to said rollers and spaced from said load ring to generate electricity as said load ring and magnets rotate thereby.
2. A wind-driven generator as defined in claim 1, wherein said electric generator structures comprise pairs of iron cores with voltage generating coils wound thereon, one of said plurality of rollers being disposed between the cores in each of said pairs of cores.
3. A wind-driven generator as defined in claim 1, wherein said blades are of varying pitch, the greatest pitch of each blade being nearest the root ring.
4. The wind-driven generator as defined in claim 1, wherein said non-ferromagnetic load ring is aluminum.
5. A wind-driven generator as defined in claim 3, wherein said non-ferromagnetic load ring is aluminum.
6. A wind-driven generator as defined in claim 1, wherein said blades are made of a foam plastic material covered with reinforced resin.
7. A wind-driven generator as defined in claim 3, further including a plastic track surface defining member overlying said magnets.
8. A wind-driven generator as defined in claim 7, wherein said backer ring is attached to a radially inner surface of said load ring.
9. A wind-driven generator as defined in claim 8, wherein said rollers bear against said inner surface and said electric generator structures are mounted on said stator structure to be closely spaced relative to said inner surface.
10. A wind-driven generator as defined in claim 1, wherein said backer ring is attached to a leeward surface of said load ring.
11. A wind-driven generator as defined in claim 10, wherein said rollers support said leeward surface.
12. A wind-driven generator as defined in claim 1, wherein means are provided for clamping said blades to said load ring.
13. A wind-driven generator as defined in claim 1, wherein said blades are integrally bonded to said load ring.
14. A wind-driven generator as defined in claim 1, wherein the electric generator structures are wired to generate three-phase electricity.
15. A wind-driven generator as defined in claim 8, further including a plurality of thrust rollers mounted on said stator structure and bearing against a leeward surface of said load ring.
16. A wind-driven generator as defined in claim 13, wherein said permanent magnets are embedded in said load ring.
17. A wind-driven generator as defined in claim 16, wherein said permanent magnets are embedded in said load ring.
18. A wind-driven generator as defined in claim 17, wherein said track surface defining member is bonded to the leeward surface of said load ring.
19. A wind-driven generator as defined in claim 1, wherein said blades are three in number.
20. A wind-driven generator as defined in claim 1, wherein said blades are six in number.
21. A wind-driven generator comprising:
a stator structure;
a rotor structure including a root ring having an axis of symmetry, a load ring concentric with said root ring and a plurality of aerodynamic blades secured between said root ring and said load ring;
a continuous array of permanent magnets attached to a surface of said load ring;
a track surface defining member disposed over said magnets;
a plurality of rollers mounted on said stator structure and positioned to run on said track surface defining member; and
a plurality of electric generator structures mounted on said stator structure closely adjacent to said roller and spaced from said surface to generate electricity as said magnets pass thereby.
22. A wind-driven generator as defined in claim 21, wherein said load ring is made of plastic.
23. A wind wheel comprising:
a root ring having an axis of symmetry;
an outer ring concentric with said root ring;
a plurality of aerodynamic blades pitched to be rotated by wind moving parallel to said axis of symmetry;
each of said blades being secured at its inner ends to said root ring and at a midpoint to said outer ring; and
means for rotatably supporting said wheel by way of said outer ring.
24. A rotor as defined in claim 23, further comprising a plurality of magnets attached to a surface of said outer ring.
25. A rotor as defined in claim 24, wherein said surface is a circumferential leeward surface.
26. A rotor as defined in claim 23, wherein said outer ring is made of aluminum.
27. A rotor as defined in claim 23, wherein said outer ring is made of plastic.
28. A stator structure for a wind-driven generator having a permanent magnet rotor comprising:
a pair of ferromagnetic core structures with coils mounted therein; and
a roller disposed immediately between said core structures for engagement with the surface of said rotor.
US11/788,901 2005-07-26 2007-04-23 Wind wheel and electricity generator using same Expired - Fee Related US7358624B2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US11/190,026 US7215038B2 (en) 2005-07-26 2005-07-26 Wind wheel and electricity generator using same
US11/788,901 US7358624B2 (en) 2005-07-26 2007-04-23 Wind wheel and electricity generator using same

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US11/788,901 US7358624B2 (en) 2005-07-26 2007-04-23 Wind wheel and electricity generator using same

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
US11/190,026 Continuation US7215038B2 (en) 2005-07-26 2005-07-26 Wind wheel and electricity generator using same

Publications (2)

Publication Number Publication Date
US20070200349A1 true US20070200349A1 (en) 2007-08-30
US7358624B2 US7358624B2 (en) 2008-04-15

Family

ID=37693507

Family Applications (3)

Application Number Title Priority Date Filing Date
US11/190,026 Expired - Fee Related US7215038B2 (en) 2005-07-26 2005-07-26 Wind wheel and electricity generator using same
US11/788,901 Expired - Fee Related US7358624B2 (en) 2005-07-26 2007-04-23 Wind wheel and electricity generator using same
US11/789,012 Expired - Fee Related US7345377B2 (en) 2005-07-26 2007-04-23 Wind wheel and electricity generator using same

Family Applications Before (1)

Application Number Title Priority Date Filing Date
US11/190,026 Expired - Fee Related US7215038B2 (en) 2005-07-26 2005-07-26 Wind wheel and electricity generator using same

Family Applications After (1)

Application Number Title Priority Date Filing Date
US11/789,012 Expired - Fee Related US7345377B2 (en) 2005-07-26 2007-04-23 Wind wheel and electricity generator using same

Country Status (9)

Country Link
US (3) US7215038B2 (en)
EP (1) EP1929153A2 (en)
JP (1) JP2009503337A (en)
KR (1) KR20080072626A (en)
CN (1) CN101331317A (en)
BR (1) BRPI0614164A2 (en)
CA (1) CA2616870A1 (en)
WO (1) WO2007016071A2 (en)
ZA (1) ZA200801459B (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100264667A1 (en) * 2009-04-20 2010-10-21 Barber Gerald L Electrical Generator for Wind Turbine
US20100264661A1 (en) * 2009-04-20 2010-10-21 Barber Gerald L Electrical generator for wind turbine
US20110140451A1 (en) * 2009-12-16 2011-06-16 Clear Path Energy, Llc Axial Gap Rotating Electrical Machine
US9270150B2 (en) 2009-12-16 2016-02-23 Clear Path Energy, Llc Axial gap rotating electrical machine
TWI643789B (en) * 2017-11-27 2018-12-11 光寶科技股份有限公司 Propeller structure

Families Citing this family (58)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1650432A4 (en) * 2003-07-08 2012-01-25 Kinpara Shiro Wind power generation system, arrangement structure of permanent magnets, and electricity/force conversion system
WO2006108901A1 (en) * 2005-04-11 2006-10-19 Maria Elena Novo Vidal Electric power generator system using ring-shaped generators
US7215038B2 (en) * 2005-07-26 2007-05-08 Bacon C Richard Wind wheel and electricity generator using same
NO20054704D0 (en) * 2005-10-13 2005-10-13 Sway As The process feed and method for wind power and propulsion system with magnetically stable main memory and load control system
AU2008243021A1 (en) * 2007-04-17 2008-10-30 Aerokinetic Energy Corporation Fluid powered generator
EP1988286A1 (en) * 2007-04-30 2008-11-05 Mario Gaia Wind turbine
US8049351B2 (en) * 2007-06-15 2011-11-01 E-Net, Llc Turbine energy generating system
US7638895B2 (en) * 2007-07-16 2009-12-29 Smartenergy, Ltd. Modular fluid-energy system
US20100148515A1 (en) * 2007-11-02 2010-06-17 Mary Geddry Direct Current Brushless Machine and Wind Turbine System
GB0723286D0 (en) * 2007-11-27 2008-01-09 Pulse Group Holdings Ltd An apparatus for generating power from a fluid stream
DK179043B1 (en) * 2008-01-31 2017-10-16 Maja Weg Samsing Gear Propeller
DE102009015044A1 (en) * 2008-05-02 2009-11-05 Hartmuth Drews Segment wreath ring generator
US8143738B2 (en) 2008-08-06 2012-03-27 Infinite Wind Energy LLC Hyper-surface wind generator
GB0818610D0 (en) * 2008-10-10 2008-11-19 Sway As Wind turbine rotor and wind turbine
BRPI1005151A2 (en) 2009-01-16 2016-03-22 Core Wind Power Inc rotary energy device axial field
EP2387665A4 (en) * 2009-01-16 2014-04-09 Benjamin P Brickett Method and apparatus for fluid turbine having a linear actuator
DE102009005957A1 (en) * 2009-01-23 2010-07-29 Avantis Ltd. A process for producing a flywheel a complete magnet system
WO2010091011A1 (en) * 2009-02-03 2010-08-12 E-Net, Llc Turbine energy generating system
US8030790B2 (en) * 2009-04-08 2011-10-04 Kamen George Kamenov Hybrid water pressure energy accumulating wind turbine and method
US8258645B2 (en) * 2009-04-20 2012-09-04 Barber Gerald L Wind turbine with sail extensions
US8174142B2 (en) * 2009-04-20 2012-05-08 Barber Gerald L Wind turbine with paired generators
US8164212B2 (en) * 2009-04-20 2012-04-24 Barber Gerald L Floating wind turbine with turbine anchor
US8109727B2 (en) 2009-04-20 2012-02-07 Barber Gerald L Wind turbine
US8134251B2 (en) * 2009-04-20 2012-03-13 Barber Gerald L Wind turbine
US8178987B2 (en) * 2009-05-20 2012-05-15 E-Net, Llc Wind turbine
WO2011002763A1 (en) * 2009-07-02 2011-01-06 Via Wind Energy, Llc Wind generator
US8164213B2 (en) * 2009-07-23 2012-04-24 Exquadrum, Inc. Orbital track wind turbine
KR100946347B1 (en) * 2009-10-12 2010-03-08 김세빈 Hoop actiniform turbine blade system of wind power generation
US8264314B2 (en) 2009-10-20 2012-09-11 Stream Power, Inc. Magnetic arrays with increased magnetic flux
US20110241349A1 (en) * 2010-03-31 2011-10-06 Pat Sankar Windmill generator
CA2717971C (en) 2010-04-20 2018-11-20 1444555 Alberta Ltd. Turbine for a fluid stream
US7939961B1 (en) * 2010-04-28 2011-05-10 General Electric Company Wind turbine with integrated design and controlling method
US9154024B2 (en) 2010-06-02 2015-10-06 Boulder Wind Power, Inc. Systems and methods for improved direct drive generators
EP2403111B1 (en) * 2010-06-29 2017-05-17 Siemens Aktiengesellschaft Generator, wind turbine, method of assembling a generator and use of a generator in a wind turbine
US8581778B2 (en) 2010-07-19 2013-11-12 Scidea Research, Inc. Pulse compression system and method
US8779618B2 (en) * 2010-09-20 2014-07-15 Daniel E. Morrison Wind turbine alternator module
US8102073B2 (en) * 2010-09-20 2012-01-24 Daniel Morrison Wind turbine alternator module
CN101951188B (en) * 2010-10-26 2012-07-25 温州大学 Method for collecting piezoelectric energy by wind energy and device thereof
WO2012149347A2 (en) * 2011-04-28 2012-11-01 E-Net, Llc Exhaust energy recovery system
GB2494924B (en) * 2011-09-26 2014-08-13 Sway Turbine As Blade connection for wind turbine
DK177555B1 (en) * 2011-11-04 2013-10-07 Envision Energy Denmark Aps Wind Turbine with Additional Rotor Moment of Inertia
JP6113180B2 (en) * 2011-11-17 2017-04-12 トサン ヘビー インダストリーズ アンド コンストラクション カンパニー,リミティド Multi-type wind power generator
IL218451D0 (en) * 2012-03-01 2012-04-30 Birarov Ofer Wind turbine
EP2648316A1 (en) * 2012-04-03 2013-10-09 Siemens Aktiengesellschaft Rotor arrangement
US20130343889A1 (en) * 2012-06-25 2013-12-26 Richard A. Himmelmann Friction Wheel Drive Train for a Wind Turbine
US8339019B1 (en) 2012-07-30 2012-12-25 Boulder Wind Power, Inc. Structure for an electromagnetic machine having compression and tension members
US8716913B2 (en) 2012-08-07 2014-05-06 Boulder Wind Power, Inc. Devices and methods for magnetic pole and back iron retention in electromagnetic machines
US8747321B2 (en) 2012-08-15 2014-06-10 Scidea Research, Inc. Structured random permutation pulse compression systems and methods
US8736133B1 (en) 2013-03-14 2014-05-27 Boulder Wind Power, Inc. Methods and apparatus for overlapping windings
US8974390B1 (en) 2013-10-03 2015-03-10 Scidea Research, Inc. Pulse compression systems and methods
US10070825B2 (en) 2013-11-26 2018-09-11 Scidea Research, Inc. Pulse compression systems and methods
ES2546709B1 (en) * 2014-03-25 2016-07-21 Luis IBOR TORTAJADA Wind-power generator
US10177620B2 (en) 2014-05-05 2019-01-08 Boulder Wind Power, Inc. Methods and apparatus for segmenting a machine
US9528497B2 (en) * 2015-01-06 2016-12-27 Suey-Yueh Hu Vehicular wind power generator
EP3265671A1 (en) * 2015-03-05 2018-01-10 Gaia S.R.L. Wind power system
US20170104385A1 (en) * 2015-10-08 2017-04-13 Adam C. Salamon Reduced Complexity Ring Motor Design for Propeller Driven Vehicles
KR101684459B1 (en) * 2016-04-06 2016-12-09 한국해양과학기술원 Wind load test equipment for wind turbines
US20170306498A1 (en) * 2016-04-25 2017-10-26 Ppg Industries Ohio, Inc. Activating rinse and method for treating a substrate

Citations (38)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US889863A (en) * 1906-04-18 1908-06-02 Otto Tzschachmann Stand for holding manuscripts or writing or drawing patterns.
US1233232A (en) * 1916-02-09 1917-07-10 Albert Herman Heyroth Wind-wheel electric generator.
US1352960A (en) * 1916-12-28 1920-09-14 Albert H Heyroth Wind-wheel electric generator
US1876595A (en) * 1928-06-28 1932-09-13 Alexander beldimano
US1944239A (en) * 1930-03-19 1934-01-23 Honnef Hermann Electric wind dynamo
US2167265A (en) * 1936-11-11 1939-07-25 Honnef Hermann Power generator
US2218867A (en) * 1937-02-06 1940-10-22 Beldimano Alessandro Wind power plant
US2652505A (en) * 1950-04-28 1953-09-15 Rudolph A Matheisel Inverse rotor
US3740565A (en) * 1971-04-26 1973-06-19 Adams B Air driven modular tandem electrical generator
US4088352A (en) * 1975-02-14 1978-05-09 Alberto Kling Wind-driven power plant
US4168439A (en) * 1977-11-28 1979-09-18 Palma F Neto Wind turbine
US4217501A (en) * 1977-10-11 1980-08-12 Allison William D Mounting for windmills
US4220870A (en) * 1978-06-22 1980-09-02 Kelly Donald A Wind conversion lattice array, with multiple mini-turbo-generator modules
US4289970A (en) * 1978-11-22 1981-09-15 Deibert David D Wind powered electrical generator
US4330714A (en) * 1980-06-26 1982-05-18 Smith Otto J M Wind turbine system
US4350895A (en) * 1980-03-03 1982-09-21 Windpowered Machines Ltd. Wind turbine and method for power generation
US4458167A (en) * 1980-05-07 1984-07-03 Gilles Leveille D. C. Electric motor with improved stator and rotor structure
US4720640A (en) * 1985-09-23 1988-01-19 Turbostar, Inc. Fluid powered electrical generator
US4832569A (en) * 1986-04-11 1989-05-23 Eirik Samuelsen Governed vane wind turbine
US5172046A (en) * 1990-08-11 1992-12-15 Fag Kugelfischer Georg Schafer Electric generator
US5315159A (en) * 1989-10-12 1994-05-24 Holec Projects B.V. Wind turbine
US5592816A (en) * 1995-02-03 1997-01-14 Williams; Herbert L. Hydroelectric powerplant
US5696419A (en) * 1994-06-13 1997-12-09 Alternative Generation Devices, Inc. High-efficiency electric power generator
US5765990A (en) * 1997-04-15 1998-06-16 Jones; Byron O. Wind wheel for the generation of electrical energy
US6064123A (en) * 1995-10-13 2000-05-16 Gislason; Nils Erik Horizontal axis wind turbine
US6648589B2 (en) * 2000-09-19 2003-11-18 Herbert Lehman Williams Hydroelectric turbine for producing electricity from a water current
US6664655B2 (en) * 2001-12-31 2003-12-16 Charles S. Vann Multaxel windmill
US6700216B1 (en) * 2003-03-03 2004-03-02 Charles S. Vann Magnetically levitated windmill
US6774504B1 (en) * 1999-09-24 2004-08-10 Zephyros B.V. Wind power generator
US6836028B2 (en) * 2001-10-29 2004-12-28 Frontier Engineer Products Segmented arc generator
US6841892B1 (en) * 1999-05-12 2005-01-11 Compagnie Internationale De Turbines Atmospheriques Wind machine with slanted blades
US6952058B2 (en) * 2003-02-20 2005-10-04 Wecs, Inc. Wind energy conversion system
US7042109B2 (en) * 2002-08-30 2006-05-09 Gabrys Christopher W Wind turbine
US7109600B1 (en) * 2004-04-19 2006-09-19 Northern Power Systems, Inc. Direct drive wind turbine
US7154191B2 (en) * 2004-06-30 2006-12-26 General Electric Company Electrical machine with double-sided rotor
US7186083B2 (en) * 2002-06-06 2007-03-06 Elliott Bayly Wind energy conversion device
US7215038B2 (en) * 2005-07-26 2007-05-08 Bacon C Richard Wind wheel and electricity generator using same
US7218011B2 (en) * 2003-04-16 2007-05-15 Composite Support & Solutions, Inc. Diffuser-augmented wind turbine

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US889883A (en) 1907-08-31 1908-06-02 Emil J Johnson Wind-operated dynamo.
DE4113624A1 (en) 1991-04-26 1992-10-29 Heinrich Dr Ing Moesinger Drive for taking power from or giving power to rotors of machine - has ring with toothed belt and electric generators
EP1650432A4 (en) 2003-07-08 2012-01-25 Kinpara Shiro Wind power generation system, arrangement structure of permanent magnets, and electricity/force conversion system

Patent Citations (39)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US889863A (en) * 1906-04-18 1908-06-02 Otto Tzschachmann Stand for holding manuscripts or writing or drawing patterns.
US1233232A (en) * 1916-02-09 1917-07-10 Albert Herman Heyroth Wind-wheel electric generator.
US1352960A (en) * 1916-12-28 1920-09-14 Albert H Heyroth Wind-wheel electric generator
US1876595A (en) * 1928-06-28 1932-09-13 Alexander beldimano
US1944239A (en) * 1930-03-19 1934-01-23 Honnef Hermann Electric wind dynamo
US2167265A (en) * 1936-11-11 1939-07-25 Honnef Hermann Power generator
US2218867A (en) * 1937-02-06 1940-10-22 Beldimano Alessandro Wind power plant
US2652505A (en) * 1950-04-28 1953-09-15 Rudolph A Matheisel Inverse rotor
US3740565A (en) * 1971-04-26 1973-06-19 Adams B Air driven modular tandem electrical generator
US4088352A (en) * 1975-02-14 1978-05-09 Alberto Kling Wind-driven power plant
US4217501A (en) * 1977-10-11 1980-08-12 Allison William D Mounting for windmills
US4168439A (en) * 1977-11-28 1979-09-18 Palma F Neto Wind turbine
US4220870A (en) * 1978-06-22 1980-09-02 Kelly Donald A Wind conversion lattice array, with multiple mini-turbo-generator modules
US4289970A (en) * 1978-11-22 1981-09-15 Deibert David D Wind powered electrical generator
US4350895A (en) * 1980-03-03 1982-09-21 Windpowered Machines Ltd. Wind turbine and method for power generation
US4458167A (en) * 1980-05-07 1984-07-03 Gilles Leveille D. C. Electric motor with improved stator and rotor structure
US4330714A (en) * 1980-06-26 1982-05-18 Smith Otto J M Wind turbine system
US4720640A (en) * 1985-09-23 1988-01-19 Turbostar, Inc. Fluid powered electrical generator
US4832569A (en) * 1986-04-11 1989-05-23 Eirik Samuelsen Governed vane wind turbine
US5315159A (en) * 1989-10-12 1994-05-24 Holec Projects B.V. Wind turbine
US5172046A (en) * 1990-08-11 1992-12-15 Fag Kugelfischer Georg Schafer Electric generator
US5696419A (en) * 1994-06-13 1997-12-09 Alternative Generation Devices, Inc. High-efficiency electric power generator
US5592816A (en) * 1995-02-03 1997-01-14 Williams; Herbert L. Hydroelectric powerplant
US6064123A (en) * 1995-10-13 2000-05-16 Gislason; Nils Erik Horizontal axis wind turbine
US5765990A (en) * 1997-04-15 1998-06-16 Jones; Byron O. Wind wheel for the generation of electrical energy
US6841892B1 (en) * 1999-05-12 2005-01-11 Compagnie Internationale De Turbines Atmospheriques Wind machine with slanted blades
US6774504B1 (en) * 1999-09-24 2004-08-10 Zephyros B.V. Wind power generator
US6648589B2 (en) * 2000-09-19 2003-11-18 Herbert Lehman Williams Hydroelectric turbine for producing electricity from a water current
US6836028B2 (en) * 2001-10-29 2004-12-28 Frontier Engineer Products Segmented arc generator
US6664655B2 (en) * 2001-12-31 2003-12-16 Charles S. Vann Multaxel windmill
US7186083B2 (en) * 2002-06-06 2007-03-06 Elliott Bayly Wind energy conversion device
US7042109B2 (en) * 2002-08-30 2006-05-09 Gabrys Christopher W Wind turbine
US6952058B2 (en) * 2003-02-20 2005-10-04 Wecs, Inc. Wind energy conversion system
US7116006B2 (en) * 2003-02-20 2006-10-03 Wecs, Inc. Wind energy conversion system
US6700216B1 (en) * 2003-03-03 2004-03-02 Charles S. Vann Magnetically levitated windmill
US7218011B2 (en) * 2003-04-16 2007-05-15 Composite Support & Solutions, Inc. Diffuser-augmented wind turbine
US7109600B1 (en) * 2004-04-19 2006-09-19 Northern Power Systems, Inc. Direct drive wind turbine
US7154191B2 (en) * 2004-06-30 2006-12-26 General Electric Company Electrical machine with double-sided rotor
US7215038B2 (en) * 2005-07-26 2007-05-08 Bacon C Richard Wind wheel and electricity generator using same

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100264667A1 (en) * 2009-04-20 2010-10-21 Barber Gerald L Electrical Generator for Wind Turbine
US20100264661A1 (en) * 2009-04-20 2010-10-21 Barber Gerald L Electrical generator for wind turbine
US7825532B1 (en) * 2009-04-20 2010-11-02 Barber Gerald L Electrical generator for wind turbine
US8373298B2 (en) 2009-04-20 2013-02-12 Gerald L. Barber Electrical generator for wind turbine
US20110140451A1 (en) * 2009-12-16 2011-06-16 Clear Path Energy, Llc Axial Gap Rotating Electrical Machine
US8373299B2 (en) * 2009-12-16 2013-02-12 Clear Path Energy, Llc Axial gap rotating electrical machine
US9270150B2 (en) 2009-12-16 2016-02-23 Clear Path Energy, Llc Axial gap rotating electrical machine
TWI643789B (en) * 2017-11-27 2018-12-11 光寶科技股份有限公司 Propeller structure

Also Published As

Publication number Publication date
WO2007016071A2 (en) 2007-02-08
KR20080072626A (en) 2008-08-06
US20070024060A1 (en) 2007-02-01
WO2007016071A3 (en) 2007-11-29
CN101331317A (en) 2008-12-24
US20070200350A1 (en) 2007-08-30
US7358624B2 (en) 2008-04-15
US7345377B2 (en) 2008-03-18
EP1929153A2 (en) 2008-06-11
US7215038B2 (en) 2007-05-08
CA2616870A1 (en) 2007-02-08
BRPI0614164A2 (en) 2009-08-04
ZA200801459B (en) 2009-01-28
JP2009503337A (en) 2009-01-29
WO2007016071A8 (en) 2008-06-26

Similar Documents

Publication Publication Date Title
CN1756052B (en) Electrical machine with double-sided stator
CN1716734B (en) Electrical machine with double-sided rotor
RU2234788C2 (en) Electrical machine
CA2448450C (en) Rotor and electrical generator
US9291153B2 (en) Fluid driven electric power generation system
EP1820727B1 (en) Vehicle wheel
US7592712B2 (en) Electric generator device actuated by a fluid flow
US6867520B2 (en) Electro-mechanical battery
US4475075A (en) Electric power generator and system
US8222762B2 (en) Direct-drive generator/motor for a windmill/hydropower Plant/Vessel where the generator/morot is configured as a hollow profile and a method to assemble such a windmill/hydropower plant
US7692357B2 (en) Electrical machines and assemblies including a yokeless stator with modular lamination stacks
US20050194790A1 (en) Wind power generating system
EP0495872B1 (en) Wind turbine
US7839049B2 (en) Stator and stator tooth modules for electrical machines
US20040135452A1 (en) Flat rotary electric generator
US20090206692A1 (en) Composite electromechanical machines with uniform magnets
US8487470B2 (en) Vertical axis wind turbine and generator therefore
US7548008B2 (en) Electrical machine with double-sided lamination stack
US8373299B2 (en) Axial gap rotating electrical machine
CN1696500A (en) Omni-directional wind turbine electric generation system
CN1298061A (en) Energy converter
US7154192B2 (en) Electrical machine with double-sided lamination stack
US8505308B2 (en) Integrated direct drive starter/generator for turbines
US9154024B2 (en) Systems and methods for improved direct drive generators
CN1213424A (en) Magnus effect horizontal axis wind turbine

Legal Events

Date Code Title Description
AS Assignment

Owner name: BACON GROUP LLC, MICHIGAN

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:BACON, C. RICHARD;REEL/FRAME:020119/0592

Effective date: 20071114

CC Certificate of correction
FPAY Fee payment

Year of fee payment: 4

REMI Maintenance fee reminder mailed
LAPS Lapse for failure to pay maintenance fees
STCH Information on status: patent discontinuation

Free format text: PATENT EXPIRED DUE TO NONPAYMENT OF MAINTENANCE FEES UNDER 37 CFR 1.362

FP Expired due to failure to pay maintenance fee

Effective date: 20160415